delrin injection molding

All acetals are strong, tough, and stiff with very high creep
resistance, making them ideal for mechanical parts like gears and chain
links. They are highly abrasion resistant (though less so than nylons or
polyethylenes) and have a low coefficient of friction against metal and
other plastics, making them an excellent choice for bearings, bushings,
and cams. They are affected by strong acids or oxidizing agents, but
otherwise have high resistance to most chemicals and low water
absorption and are widely used for packaging and dispensing components.
In general, they can withstand a range of temperatures, but tend to
degrade when exposed to ultraviolet light.

higher flexural modulus than copolymers, i.e., are stiffer at both room temperature and elevated temperatures

• higher impact strength making them somewhat less likely to fracture
on impact; the advantage over copolymers becomes more significant at
extreme temperatures